At least 23 of the 700 or so black and white rhinos in the country were poached this year, but authorities managed to arrest 37 poachers and horn dealers. Rhino horns are popular for folk medicine, especially in Asia where they fetch high prices. One tactic of the poachers is to poison water holes, which kills not just the rhinos but any animal that drinks there.

More than $4 million is being spent to protect the animals, the government says, including implanting radio transmitters into the horns of 100 rhinos this year.

Zimbabwe isn’t the only country facing this problem. The Huffington Post reports that South Africa is doing more to train park workers on how to investigate incidents of poaching. Several poachers were killed in shootouts with authorities earlier this year, but that didn’t stop 341 South African rhinos from being poached in the first 10 months of the year, more than in all of 2010.